.c-main {
  position: relative;
  z-index: 1000;
  height: 95%;
  overflow: hidden;
}
.item-1 {
  position: absolute;
  width: 180px;
  height: 80px;
  box-shadow: 0px 0px 4px rgba(0, 0, 0, 0.4);
  user-select: none;
  cursor: move;
}
.item-1:hover{
  box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.5);
}
.item-1-title {
  height: 30px;
  text-align: center;
  line-height: 34px;
  font-weight: 550;
  background: #ffd800;
}
.item-1-content {
  color: #aaa;
  font-size: 14px;
}
.context-menu {
  position: absolute;
  z-index: 1000;
  width: 200px;
  height: fit-content;
  border-radius: 4px;
  box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.4);
  display: flex;
}

.menu-node-header {
  border-bottom: 1px solid #ccc;
}
.menu-node {
  height: 36px;
  line-height: 36px;
  padding-left: 20px;
  cursor: pointer;
}
.menu-node:hover {
  background: #eeeeee;
}
